Quest Controls Inc.

    Quest T-stat Model 101 Lead/Lag Controller

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Quest T-stat Model 101 Lead/Lag Controller

Optimize Operation & Reduce Energy Consumption

Model_100_LLC

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Product Information
The Quest T-stat Lead/Lag Controller Model 101 is a smart control system designed to replace conventional Lead/Lag controllers that do not offer wide temperature control windows for advanced optimization of HVAC operation. The T-stat LLC controls two single stage HVAC systems to provide lead/lag operation with automatic switching based upon time. The system has a built in 2 line by 16 character display for status monitoring of the current temperature and operating mode of the HVAC equipment.




The Quest T-stat Lead/Lag Controller Model 101 is a smart control system designed to replace conventional Lead/Lag controllers that do not offer wide temperature control windows for advanced optimization of HVAC operation. The T-stat LLC controls two single stage HVAC systems to provide lead/lag operation with automatic switching based upon time. The system has a built in 2 line by 16 character display for status monitoring of the current temperature and operating mode of the HVAC equipment.

  • Controls two single-stage HVAC systems for Fan, Cool and Heat.
  • Power from both HVAC’s 24VAC transformers.
  • Automatic lead change every 24 hours.
  • LCD display for current operating mode and shelter temperature readings.
  • Comfort mode to allow “Occupied” temperature settings for one hour.
  • Five button keypad for navigation to other status screens.
  • Built in zone temperature.
  • The setpoints are factory configured but changeable through password protected menus.

Setpoint NameValue
Normal mode - Lead unit cooling on80
Normal mode - Lag unit cooling on84
Normal mode - All cooling off75
Normal mode - Lead unit heating on45
Normal mode - Lag unit heating on
43
Normal mode - All heating off
50
Comfort mode - Lead unit cooling on76
Comfort mode - Lag unit cooling on
80
Comfort mode - All cooling off
71
Comfort mode - Lead unit heating on
55
Comfort mode - Lag heating on
53
Comfort mode - All heating off
60
Lead Switch time
24 hours
Comfort mode time
1 hour
Lead unit fan operation Automatic


Applications:
• Utilities/Telecommunication / Cable & Broadband – Remote Cabinets & Shelters
• Data / Switching / Computer Centers / COs / Headends & Hubs

Quest Part number — 150966-2

Outputs — Six solid state digital outputs designed to switch 24VAC

Input — Thermistor temperature sensor ±1°F (0.5°C)

Display — LCD backlit 2 line by 16 alphanumericcharacter display

Keypad — Five button directional arrows plus enter button

Mounting — Wall mount directly or standard single gang electrical box

Power — 24VAC

Enclosure — Two piece thermal molded plastic enclosure. All wiring is done on the mounted base and the controller is pull-off.

Ambient Operating Temp — 23° to 131°F (-5° to 55°C), 0-95% RH Non-condensing

Size — 5.32”W x 3.5”H x 1”D (135 x 89 x 25 mm)

Weight — 0.5 lb. (227 g)

Specifications subject to change without notice